Results 101 to 110 of about 7,806 (221)

TEM and SAED Characterization of Metakaolin. Pozzolanic Activity [PDF]

open access: yes, 2012
The present study deals with a characterization of metakaolin pozzolanic activity and its chemical character exhibited in the Ordinary Portland Cement (OPC) blends by means of Transmission Electron Microscopy (TEM) and Selected-Area Electron Diffraction (
Fernandez Martinez, F.   +3 more
core   +2 more sources

Waste clay materials as pozzolanic additions [PDF]

open access: yes, 2009
En: 1st Spanish National Conference on Advances in Materials Recycling and Eco – Energy Madrid, 12-13 November 2009.-- Editors: F. A. López, F. Puertas, F. J. Alguacil and A.
Ferreiro, S.   +4 more
core  

Corrosion Behavior of Steel Embedded in Ternary Concrete Mixtures

open access: yesInternational Journal of Electrochemical Science, 2011
The main reason for the premature failure of reinforced concrete structures is corrosion of the reinforcements. The use of new mortars based on ternary mixtures, an alternative to ordinary Portland cement (OPC), requires extensive research in order to ...
E.P. Reyes-Diaz   +8 more
doaj   +1 more source

Strength development of fly ash based composite material [PDF]

open access: yes, 2007
The term „fly ash‟ is often used to describe any fine particulate material precipitated from the stack gases of industrial furnaces burning solid fuels.
Nayak, Prashant Kumar, V, Srikrishnan
core  

New method to assess the pozzolanic reactivity of mineral admixtures by means of pH and electrical conductivity measurements in lime:pozzolan suspensions

open access: yesMateriales de Construccion, 2014
A very simple method based on electrical conductivity and pH measurements was proposed for assessing reactivity of pozzolans. Calcium hydroxide:pozzolan water suspensions were monitored by means of measurements of electrical conductivity and pH values ...
M. M. Tashima   +5 more
doaj   +1 more source

Effect of supplementary cementitious materials on capillary sorption : relation with drying rate and testing time [PDF]

open access: yes, 2017
The water sorption phenomenon in a cementitious matrix is responsible for the ingress of several deleterious agents, and it is directly related to pore connectivity and pore volume.
Alderete, Natalia Mariel   +2 more
core  

Some considerations about the durability of historic mortars [PDF]

open access: yes, 2008
The current manuscript discusses the durability of historical mortars. The majority of the descriptions about those mortars are mainly related to the Roman period and refer the mixture of calcium hydroxide and pozzolans (volcanic ashes and calcined ...
Gomes, J. P. Castro   +2 more
core  

The effectiveness of palm oil fuel ash (POFA) to resist chloride ion in concrete [PDF]

open access: yes, 2013
In nowadays construction, the demand for high performance and high durability of concrete is highly required to be used in reinforced concrete structure.
Mohd Zhafir, Mohd Jais
core  

Materials Science in Ancient Rome [PDF]

open access: yes, 2011
Two books, the "De Architectura" by Vitruvius and the "Naturalis Historia" by Pliny the Elder, give us a portrait of the Materials Science, that is, the knowledge of materials, in Rome at the beginning of the Empire.
Sparavigna, Amelia Carolina
core   +1 more source

Study of efflorescence forming process on cementitious materials // Etude du processus de formation des efflorescences sur des matériaux cimentaires [PDF]

open access: yes, 2007
International audienceEfflorescence is a white deposit of calcium carbonate on the surface of cementitious materials. It appears under specific climatic conditions.
Delair, Stéphanie   +3 more
core   +1 more source

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